Four-stories of reinforced concrete, and yet completely luxurious and extravagant this bunker is found on Hawaii’s Big Island. The Ninole, Hawaii, bunker lies in a tropical paradise and features more than its fair share of over-the-top amenities. Known asWater Falling it has been listed for $26.5 million, but heads to auction on March 22 in a no-reserve, highest-bidder-wins auction.

The bunker’s offerings include an Olympic-sized pool, waterslide, high dive platform, and helicopter pad. However, the 8,100-square-foot mansion does not stop there and was sure to also have an elevated basketball stadium, golf course, and yes, a glass elevator. And, of course, the bunker has some pretty outstanding views, floor-to-ceiling windows, and high quality finishes and furnishings.